INJECTION TREATMENT SIMULATION USING CONDENSATION

摘要

An injection treatment on a subterranean zone is simulated by modeling physically separate rock blocks of the subterranean zone by separate block models. The block model for each physically separate rock block represents intra-block mechanics of the rock block by finite element method. Condensation is performed in the finite element method to reduce nodal degrees of freedom operation on by the finite element method. Interactions between adjacent pairs of the rock blocks are modeled by separate joint models. The joint model for each adjacent pair of rock blocks represents inter-block mechanics between the adjacent rock blocks. The injection treatment of the subterranean zone is simulated with the block models and the joint models.